The Portsmouth Gaseous Diffusion
Plant is located in Pike County in Ohio on a 4,000 acre reservation.
The plant was in operation from 1954 to 2001, when it was managed
and operated by Goodyear Atomic Company. Portsmouth was designed
to enrich uranium from 0.7% U-235 up to 98% U-235. The plant consists
of three large process buildings (X-326, X-330, and X-333). In
addition, other major support functions include: maintenance (building
720); decontamination of process components (building 705); chemical
cleaning of components (building 700); assembly of converters (building
700); UF6 feed vaporization (building 342); and product shipment
(building 344). Currently, plant management at Portsmouth consists
of U.S. Enrichment Corporation and a number of DOE contractors
and subcontractors including: Theta and Pro 2 Serve (TMPC) (infrastructure
contractor); Los Alamos Technical Associates and Parallax (remediation)
and; Uranium Disposition Services (depleted uranium hexafluoride
conversion plant).